package com.atguigu.yygh.hosp.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.yygh.hosp.repository.DepartmentRepository;
import com.atguigu.yygh.hosp.service.DepartmentService;
import com.atguigu.yygh.model.hosp.Department;
import com.atguigu.yygh.vo.hosp.DepartmentVo;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.*;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class DepartmentServiceImpl implements DepartmentService {

    @Autowired
    private DepartmentRepository departmentRepository;

    //上传科室
    @Override
    public void saveDepartment(Map<String, Object> paramMap) {
        //paramMap -- 对象
        String jsonString = JSONObject.toJSONString(paramMap);
        Department department = JSONObject.parseObject(jsonString, Department.class);

        //判断科室是否已经存在
        Department existDept =
                departmentRepository.findDeptByHoscodeAndDepcode(department.getHoscode(),department.getDepcode());
        if(existDept != null) {
            department.setId(existDept.getId());
            department.setCreateTime(existDept.getCreateTime());
            department.setUpdateTime(new Date());
            departmentRepository.save(department);
        } else {
            department.setCreateTime(new Date());
            department.setUpdateTime(new Date());
            departmentRepository.save(department);
        }
    }

    //获取分页列表
    @Override
    public Page<Department> selectPageDept(int page, int limit) {
        //设置排序
        Sort sort = Sort.by(Sort.Direction.DESC,"createTime");
        //设置分页
        //0代表第一页
        Pageable pageable = PageRequest.of(page-1,limit,sort);

        //封装条件
        ExampleMatcher matcher = ExampleMatcher.matching() //构建对象
                .withStringMatcher(ExampleMatcher.StringMatcher.CONTAINING) //改变默认字符串匹配方式：模糊查询
                .withIgnoreCase(true); //改变默认大小写忽略方式：忽略大小写
        Department department = new Department();
        department.setHoscode("10000");
        Example<Department> example = Example.of(department,matcher);
        //调用方法分页查询
        Page<Department> pages = departmentRepository.findAll(example, pageable);
        return pages;
    }

    //删除科室
    @Override
    public void removeDept(String hoscode, String depcode) {
        //根据医院编号 + 科室编号 查询
        Department department = departmentRepository.findDeptByHoscodeAndDepcode(hoscode, depcode);
        if(department != null) {
            departmentRepository.deleteById(department.getId());
        }
    }

    //根据医院编号，查询医院所有科室列表
    @Override
    public List<DepartmentVo> findDeptTree(String hoscode) {
        //创建list集合，用于最终数据封装
        List<DepartmentVo> result = new ArrayList<>();

        //根据医院编号，查询医院所有科室信息
        Department departmentQuery = new Department();
        departmentQuery.setHoscode(hoscode);
        Example example = Example.of(departmentQuery);
        //所有科室列表 departmentList
        List<Department> departmentList = departmentRepository.findAll(example);

        //根据大科室编号 bigcode 分组，获取每个大科室里面下级子科室
        Map<String, List<Department>> deparmentMap = departmentList.stream().collect(Collectors.groupingBy(Department::getBigcode));
        //遍历map集合 deparmentMap
        for (Map.Entry<String, List<Department>> entry : deparmentMap.entrySet()) {
            //大科室编号
            String bigcode = entry.getKey();
            //大科室编号对应的全局数据
            List<Department> departmentList1 = entry.getValue();
            //封装大课室
            DepartmentVo departmentVo1 = new DepartmentVo();
            departmentVo1.setDepcode(bigcode);
            departmentVo1.setDepname(departmentList1.get(0).getBigname());

            //封装小科室
            List<DepartmentVo> children = new ArrayList<>();
            for (Department department : departmentList1) {
                DepartmentVo departmentVo2 = new DepartmentVo();
                departmentVo2.setDepcode(department.getDepcode());
                departmentVo2.setDepname(department.getDepname());
                //封装到list集合
                children.add(departmentVo2);
            }
            //把小科室list集合放到大科室children里面
            departmentVo1.setChildren(children);
            //放到最终result里面
            result.add(departmentVo1);
        }
        return result;
    }

    //根据科室编号，和医院编号，查询科室名称
    @Override
    public String getDepName(String hoscode, String depcode) {
        Department department= departmentRepository
                .findDeptByHoscodeAndDepcode(hoscode,depcode);
        if(department != null){
            return department.getDepname();
        }
        return null;
    }

    //科室数据
    @Override
    public Department getDepartment(String hoscode, String depcode) {
        Department department =
                departmentRepository.findDeptByHoscodeAndDepcode(hoscode, depcode);
        return department;
    }
}
